å½åè¸ç·éåä»ä¹æ ·çåå¡åå
æ³çåæµ·åä¸æ³åéé¢ï¼é£å°±è®°å¾æ两é¬åèåçæ边沿头ååçï¼ç¶åéæ¸åé¿ï¼è¿æ ·çååæ¢æ¶å°æåã
ååçè头åå好ååï¼ä¸¤è¾¹ç头ååçï¼ä¸é´ç头ååä¸æçå®åã
é½åæµ·ååï¼è½ç¶åæµ·æºé¿ï¼ä½æ¯ä¸¤é¬åçï¼æ¾å¾äººå¾ç²¾ç¥ã
è¿æ¬¾åç·ååç®çº¦ä¸å¼ æ¬ï¼ä½æ¯å¦æä½ æå «åè ¹èï¼ååä»ä¹çå·²ç»ä¸éè¦äºã